"Add New Toolchain" in e2studio not accepting toolchain path

i am using e2studio version :
I have download and installed GNU ARM Toolchain : Version 4.9 2015q3
Now when i try to add toolchain manually in e2studio it's not accepting the given path. Please see the below image.

OK button remains disable. Please help me to add the toolchain?

  • pls upgrade your E2Studio, release 4.0 is quite outdated.

    5.2.x is the actual one. I also think it shall better support the debug interface for peach.

    I hardly doubt the plugins are supporting the gnuarm 4.9 toolchain on E2studio 4.0

    (for Synergy targets it was supported from 5.0+, which was available middle of this year)